论文部分内容阅读
物体在平面镜里成的像实质上就是物体关于镜面的对称点.在与平面镜成像有关的一类物理问题中,若将物体与物体所成的像转换为轴对称图形,把平面镜转换为对称轴,从数学的角度出发去分析解决这类问题(即利用轴对称的性质解决平面镜成像有关的问题),往往可化繁为简,化难为易.例1一面镜子MN竖直悬挂在墙l上,人眼位置如图1.有三个物体A、B、C悬
The image formed by an object in a plane mirror is essentially the symmetry point of the object with respect to the mirror surface. In a class of physical problems related to imaging of a plane mirror, if the image formed by the object and the object is converted into an axisymmetric figure, the plane mirror is converted into an axis of symmetry. From the perspective of mathematics to analyze and solve such problems (that is, the use of axisymmetric properties to solve the problems related to plane mirror imaging), it is often possible to simplify everything and make things difficult. Example 1 A mirror MN is hung vertically on a wall l. The location of the human eye is shown in Figure 1. There are three objects A, B, and C.